Joshua Camden, Marquess of Montfort, will do everything in his power to save his precious Graystone Manor - even take a wife he doesn't want. But he isn't prepared for the one demand the woman who holds the power to save his precious Graystone makes - that he remain faithful forever. Lady Allison Townsend would rather go to her grave a spinster than marry a man who embarrasses her with his string of mistresses. But when she's given no choice but to marry one of London's most well-known rakes and womanizers, she refuses to go to the altar without a stipulation of her own - that the man she marries never share his bed with another woman. But neither Allison nor Joshua is prepared for the dangers they're forced to face and the choices they're forced to make to protect their happiness - as well as their hearts.